Cleaned up matomo integration

roles/nginx/templates/nginx.conf.j2

@@ -1,8 +1,3 @@
-{% if global_matomo_tracking_enabled | bool %}
-# @todo Assume this can be removed. Remove. 
-load_module /usr/lib/nginx/modules/ngx_http_headers_more_filter_module.so;
-{% endif %}
-
 worker_processes auto;
 
 events
@@ -15,12 +10,12 @@ http
   include mime.types;
   default_type text/html;
 
-  # caching
+  {# caching #}
   proxy_cache_path /tmp/cache levels=1:2 keys_zone=cache:20m max_size=20g inactive=14d use_temp_path=off;
 
-  # logging and debugging
+  {# logging and debugging #}
 {% if enable_debug | bool %}
-  # individual log format for better debugging
+  {# individual log format for better debugging #}
   log_format debug '$host - $remote_addr [$time_local] '
                   '"$request" $status $body_bytes_sent '
                   '"Referer: $http_referer" '
@@ -39,7 +34,7 @@ http
   sendfile on;
   keepalive_timeout 65;
 
-  # gzip
+  {# gzip #}
   gzip on;
   gzip_proxied any;
   gzip_vary on;